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fix(telegram): drop ppid watchdog check; redirect bun install stdout to stderr

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Two v0.0.5/0.0.6 regressions causing the plugin to fail at startup:

1. The orphan watchdog's process.ppid !== bootPpid check false-fires when the
   bun-run/shell wrapper exits or execs during normal startup and we get
   reparented to init — plugin self-terminates ~5s after launch. Stdin-close
   alone is the correct signal: the kernel closes the MCP pipe on any CLI
   death regardless of intermediate wrappers, so the ppid check was both
   unnecessary and harmful. (#1467; also the actual cause of #1459 item 3
   and likely #1425.)

2. 'bun install --no-summary' in the start script writes to stdout, which is
   the MCP JSON-RPC transport. The harness sees non-JSON bytes during the
   handshake and drops the connection ('Failed to connect'). Redirect install
   output to stderr. (#1470; also explains #1425 on Windows.)
This commit is contained in:
Claude 2026-04-22 18:35:49 +00:00
parent 6ceddea179
commit 1efdff09d7
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2 changed files with 8 additions and 10 deletions
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2
external_plugins/telegram/package.json
View File

@ -5,7 +5,7 @@
"type": "module",
"bin": "./server.ts",
"scripts": {
"start": "bun install --no-summary && bun server.ts"
"start": "bun install --no-summary 1>&2 && bun server.ts"
},
"dependencies": {
"@modelcontextprotocol/sdk": "^1.0.0",

16
external_plugins/telegram/server.ts
View File

@ -660,16 +660,14 @@ process.on('SIGTERM', shutdown)
process.on('SIGINT', shutdown)
process.on('SIGHUP', shutdown)
// Orphan watchdog: stdin events above don't reliably fire when the parent
// chain (`bun run` wrapper → shell → us) is severed by a crash. Poll for
// reparenting (POSIX) or a dead stdin pipe and self-terminate.
const bootPpid = process.ppid
// Orphan watchdog: belt-and-suspenders for the stdin 'end'/'close' handlers
// above. Stdin is the MCP transport pipe inherited straight from the CLI; the
// kernel closes it on any CLI death (clean, crash, SIGKILL, OOM) regardless of
// intermediate wrappers. A ppid-change check used to live here but it
// false-fires when the bun-run/shell wrapper exits or execs during normal
// startup and we get reparented to init.
setInterval(() => {
const orphaned =
(process.platform !== 'win32' && process.ppid !== bootPpid) ||
process.stdin.destroyed ||
process.stdin.readableEnded
if (orphaned) shutdown()
if (process.stdin.destroyed || process.stdin.readableEnded) shutdown()
}, 5000).unref()
// Commands are DM-only. Responding in groups would: (1) leak pairing codes via